O. N. Kozina

Toward the Theory of THz Laser with Graphene Based Asymmetrical Hyperbolic Metamaterial

Theoretical model of the terahertz laser, based on graphene-multilayer asymmetric hyperbolic metamaterials, strongly coupled to terahertz radiation is present. Gain saturation was taken into account.

Quantum states density control in the cavity with hyperbolic material layer

We have estimated the effect of increasing of density of states of electromagnetic field in complex cavity with asymmetric hyperbolic metamaterial. Direct calculation of modal field and dispersion equation have been done taking into account the anisotropy of the hyperbolic media slab. The 4x4 Berreman matrix method was used.

THz-wave gain in asymmetric graphene-SiC hyperbolic metamaterial

Investigation of the THz radiation propagation in hyperbolic graphene-semiconductor metamaterial is presented. Anisotropy of the hyperbolic media slab was taken into account. The 4×4 Berreman matrix method was adopted for arbitrary orientation of optical axis according to slab boundary.

Light propagation characteristics of hyperbolic graphene-semiconductor multilayered medium

The light propagating characteristic of the hyperbolic metamaterial consists of graphene and semiconductor layers titled in relation to outer boundary are presented. Promising combination of the graphene and SiC, due to realistic technology condition was investigated. Possibility of control of the light propagating through such structure will be discussed.

Light propagation characteristics of optical metal dielectric coaxial nano-waveguides with complex shapes

The properties of new optical waveguides with nanosize cross-section made of noble metals and glasses are described. This waveguide supports propagation of modes with unusual propagation properties. The comparatively low value of losses has explained.

Light propagation characteristics in subwavelength metal-dielectric optical coaxial nano-waveguides

In this paper we investigate the field propagation characteristic in new type new optical waveguides, made of glasses and noble metals. The proposed waveguide, having nanosize cross-section, supports propagation of modes with unusual propagation properties. The propagation speed, attenuation and field localization of those modes will be present. The proportional reducing of the coaxial scale have been investigated. The results of this demagnification will discussed. The comparatively low value of losses will be explained.

Light propagation characteristics in metal-dielectric optical nanocables

In this paper we investigate the field propagation characteristic in new type new optical waveguides, made of glasses and noble metals. The proposed waveguide, having nanosize cross-section, supports propagation of modes with unusual propagation properties. The propagation speed, attenuation and field localization of those modes will be present. The proportional reducing of the coaxial scale have been investigated. The results of this demagnification will be discussed. The comparatively low value of losses will be explained.

Laser action in photonic crystal structures with activated glass

We present the theoretical and numerical approach to the computation of the lasing from 1D and 2D photonic crystal structures with active medium for nonlinear case. We used the transfer matrix formalism for studying the amplification in a photonic crystal. The lazing optimum condition is determined. The parameters of photonic crystal laser based on activated glasses can choose by this method.

Off-Axial Laser Effect in 1D Photonic Crystal with Active Layers

We present the results of calculations of the spectral characteristics of finite length 1D PC with air-glass-doped layers. For these calculations we used the transfer matrix formalism. We present also the results of calculation accounting nonlinear deformation of the field distribution along the structure due to gain and refraction index saturation. The results of calculations of laser power are presented on the dependence from gain